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<a name="1" href="#1">1</a>   <em class="comment">/*</em>
<a name="2" href="#2">2</a>   <em class="comment"> * @(#)ClassUtilsSuperclassChainTest.java     6 Mar 2009</em>
<a name="3" href="#3">3</a>   <em class="comment"> * </em>
<a name="4" href="#4">4</a>   <em class="comment"> * Copyright © 2009 Andrew Phillips.</em>
<a name="5" href="#5">5</a>   <em class="comment"> *</em>
<a name="6" href="#6">6</a>   <em class="comment"> * ====================================================================</em>
<a name="7" href="#7">7</a>   <em class="comment"> * Licensed under the Apache License, Version 2.0 (the "License");</em>
<a name="8" href="#8">8</a>   <em class="comment"> * you may not use this file except in compliance with the License.</em>
<a name="9" href="#9">9</a>   <em class="comment"> * You may obtain a copy of the License at</em>
<a name="10" href="#10">10</a>  <em class="comment"> *</em>
<a name="11" href="#11">11</a>  <em class="comment"> * <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="12" href="#12">12</a>  <em class="comment"> *</em>
<a name="13" href="#13">13</a>  <em class="comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="14" href="#14">14</a>  <em class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="15" href="#15">15</a>  <em class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or </em>
<a name="16" href="#16">16</a>  <em class="comment"> * implied.</em>
<a name="17" href="#17">17</a>  <em class="comment"> * See the License for the specific language governing permissions and</em>
<a name="18" href="#18">18</a>  <em class="comment"> * limitations under the License.</em>
<a name="19" href="#19">19</a>  <em class="comment"> * ====================================================================</em>
<a name="20" href="#20">20</a>  <em class="comment"> */</em>
<a name="21" href="#21">21</a>  <strong>package</strong> com.qrmedia.commons.lang;
<a name="22" href="#22">22</a>  
<a name="23" href="#23">23</a>  <strong>import</strong> <strong>static</strong> org.junit.Assert.assertEquals;
<a name="24" href="#24">24</a>  <strong>import</strong> <strong>static</strong> org.junit.Assert.assertNull;
<a name="25" href="#25">25</a>  <strong>import</strong> <strong>static</strong> org.junit.Assert.assertTrue;
<a name="26" href="#26">26</a>  <strong>import</strong> <strong>static</strong> org.junit.Assert.fail;
<a name="27" href="#27">27</a>  
<a name="28" href="#28">28</a>  <strong>import</strong> java.io.Serializable;
<a name="29" href="#29">29</a>  <strong>import</strong> java.util.ArrayList;
<a name="30" href="#30">30</a>  <strong>import</strong> java.util.Arrays;
<a name="31" href="#31">31</a>  <strong>import</strong> java.util.Collection;
<a name="32" href="#32">32</a>  <strong>import</strong> java.util.Collections;
<a name="33" href="#33">33</a>  <strong>import</strong> java.util.HashSet;
<a name="34" href="#34">34</a>  <strong>import</strong> java.util.List;
<a name="35" href="#35">35</a>  <strong>import</strong> java.util.Set;
<a name="36" href="#36">36</a>  
<a name="37" href="#37">37</a>  <strong>import</strong> org.junit.Test;
<a name="38" href="#38">38</a>  <strong>import</strong> org.junit.runner.RunWith;
<a name="39" href="#39">39</a>  <strong>import</strong> org.junit.runners.Parameterized;
<a name="40" href="#40">40</a>  <strong>import</strong> org.junit.runners.Parameterized.Parameters;
<a name="41" href="#41">41</a>  
<a name="42" href="#42">42</a>  <em>/**<em>*</em></em>
<a name="43" href="#43">43</a>  <em> * Unit tests for the {@link ClassUtils#getSuperclassChains(Class, Class)} and </em>
<a name="44" href="#44">44</a>  <em> * {@link ClassUtils#getSuperclassChain(Class, Class) getSuperclassChain(Class, Class)} methods.</em>
<a name="45" href="#45">45</a>  <em> * </em>
<a name="46" href="#46">46</a>  <em> * @author aphillips</em>
<a name="47" href="#47">47</a>  <em> * @since 6 Mar 2009</em>
<a name="48" href="#48">48</a>  <em> * @see ClassUtilsTest</em>
<a name="49" href="#49">49</a>  <em> *</em>
<a name="50" href="#50">50</a>  <em> */</em>
<a name="51" href="#51">51</a>  @RunWith(value = Parameterized.<strong>class</strong>)
<a name="52" href="#52">52</a>  @SuppressWarnings({ <span class="string">"rawtypes"</span>, <span class="string">"unchecked"</span> })
<a name="53" href="#53">53</a>  <strong>public</strong> <strong>class</strong> ClassUtilsSuper<strong>class</strong>ChainTest {
<a name="54" href="#54">54</a>      <strong>private</strong> <strong>final</strong> Class clazz;
<a name="55" href="#55">55</a>      <strong>private</strong> <strong>final</strong> Class superclass;
<a name="56" href="#56">56</a>      <strong>private</strong> <strong>final</strong> <strong>boolean</strong> validArguments;
<a name="57" href="#57">57</a>      <strong>private</strong> <strong>final</strong> Set&lt;List&lt;Class&lt;?>>> expectedSuperclassChains;
<a name="58" href="#58">58</a>  
<a name="59" href="#59">59</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface1 {}
<a name="60" href="#60">60</a>      
<a name="61" href="#61">61</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface2a <strong>extends</strong> Interface1 {}
<a name="62" href="#62">62</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface2b <strong>extends</strong> Interface1 {}
<a name="63" href="#63">63</a>      
<a name="64" href="#64">64</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface3 <strong>extends</strong> Interface2a, Interface2b {}
<a name="65" href="#65">65</a>      
<a name="66" href="#66">66</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface4a <strong>extends</strong> Interface3, Cloneable {}
<a name="67" href="#67">67</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface4b <strong>extends</strong> Interface3 {}
<a name="68" href="#68">68</a>      
<a name="69" href="#69">69</a>      <strong>private</strong> <strong>static</strong> <strong>interface</strong> Interface5 <strong>extends</strong> Interface4a, Interface4b {}
<a name="70" href="#70">70</a>      
<a name="71" href="#71">71</a>      <strong>private</strong> <strong>static</strong> <strong>class</strong> Class1 implements Interface4a, Cloneable {}
<a name="72" href="#72">72</a>      
<a name="73" href="#73">73</a>      <strong>private</strong> <strong>static</strong> <strong>class</strong> Class2 <strong>extends</strong> Class1 implements Interface5, Serializable {
<a name="74" href="#74">74</a>          <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>long</strong> serialVersionUID = 1L;
<a name="75" href="#75">75</a>      }
<a name="76" href="#76">76</a>      
<a name="77" href="#77">77</a>      <strong>private</strong> <strong>static</strong> <strong>class</strong> Class3 <strong>extends</strong> Class2 {
<a name="78" href="#78">78</a>          <strong>private</strong> <strong>static</strong> <strong>final</strong> <strong>long</strong> serialVersionUID = 1L;
<a name="79" href="#79">79</a>      }
<a name="80" href="#80">80</a>  
<a name="81" href="#81">81</a>      @Parameters
<a name="82" href="#82">82</a>      <strong>public</strong> <strong>static</strong> Collection&lt;Object[]> data() {
<a name="83" href="#83">83</a>          List&lt;Object[]> data = <strong>new</strong> ArrayList&lt;Object[]>();
<a name="84" href="#84">84</a>          
<a name="85" href="#85">85</a>          <em class="comment">// invalid arguments</em>
<a name="86" href="#86">86</a>          data.add(<strong>new</strong> Object[] { <strong>null</strong>, <strong>null</strong>, false, <strong>null</strong> });
<a name="87" href="#87">87</a>          data.add(<strong>new</strong> Object[] { <strong>null</strong>, Interface1.<strong>class</strong>, false, <strong>null</strong> });
<a name="88" href="#88">88</a>          data.add(<strong>new</strong> Object[] { Class1.<strong>class</strong>, <strong>null</strong>, false, <strong>null</strong> });
<a name="89" href="#89">89</a>          
<a name="90" href="#90">90</a>          <em class="comment">// nonexistent chains (class/interface -> class/interface)</em>
<a name="91" href="#91">91</a>          data.add(<strong>new</strong> Object[] { Object.<strong>class</strong>, String.<strong>class</strong>, <strong>true</strong>, Collections.EMPTY_SET });
<a name="92" href="#92">92</a>          data.add(<strong>new</strong> Object[] { Interface1.<strong>class</strong>, Object.<strong>class</strong>, <strong>true</strong>, Collections.EMPTY_SET });
<a name="93" href="#93">93</a>          data.add(<strong>new</strong> Object[] { Object.<strong>class</strong>, Interface1.<strong>class</strong>, <strong>true</strong>, Collections.EMPTY_SET });
<a name="94" href="#94">94</a>          data.add(<strong>new</strong> Object[] { Interface1.<strong>class</strong>, Cloneable.<strong>class</strong>, <strong>true</strong>, Collections.EMPTY_SET });
<a name="95" href="#95">95</a>          
<a name="96" href="#96">96</a>          <em class="comment">// class -> class chains</em>
<a name="97" href="#97">97</a>          data.add(<strong>new</strong> Object[] { Object.<strong>class</strong>, Object.<strong>class</strong>, <strong>true</strong>, 
<a name="98" href="#98">98</a>                  asSet(Arrays.asList(Object.<strong>class</strong>)) });
<a name="99" href="#99">99</a>          data.add(<strong>new</strong> Object[] { Class3.<strong>class</strong>, Class2.<strong>class</strong>, <strong>true</strong>, 
<a name="100" href="#100">100</a>                 asSet(Arrays.asList(Class3.<strong>class</strong>, Class2.<strong>class</strong>)) });        
<a name="101" href="#101">101</a>         data.add(<strong>new</strong> Object[] { Class3.<strong>class</strong>, Object.<strong>class</strong>, <strong>true</strong>, 
<a name="102" href="#102">102</a>                 asSet(Arrays.asList(Class3.<strong>class</strong>, Class2.<strong>class</strong>, Class1.<strong>class</strong>, Object.<strong>class</strong>)) });
<a name="103" href="#103">103</a>         
<a name="104" href="#104">104</a>         <em class="comment">// class -> interface chains</em>
<a name="105" href="#105">105</a>         data.add(<strong>new</strong> Object[] { Class2.<strong>class</strong>, Interface5.<strong>class</strong>, <strong>true</strong>, 
<a name="106" href="#106">106</a>                 asSet(Arrays.asList(Class2.<strong>class</strong>, Interface5.<strong>class</strong>)) });
<a name="107" href="#107">107</a>         data.add(<strong>new</strong> Object[] { Class3.<strong>class</strong>, Interface4a.<strong>class</strong>, <strong>true</strong>, asSet(
<a name="108" href="#108">108</a>                 Arrays.asList(Class3.<strong>class</strong>, Class2.<strong>class</strong>, Interface5.<strong>class</strong>, Interface4a.<strong>class</strong>),
<a name="109" href="#109">109</a>                 Arrays.asList(Class3.<strong>class</strong>, Class2.<strong>class</strong>, Class1.<strong>class</strong>, Interface4a.<strong>class</strong>)) });        
<a name="110" href="#110">110</a>         data.add(<strong>new</strong> Object[] { Class2.<strong>class</strong>, Interface3.<strong>class</strong>, <strong>true</strong>, asSet(
<a name="111" href="#111">111</a>                 Arrays.asList(Class2.<strong>class</strong>, Interface5.<strong>class</strong>, Interface4a.<strong>class</strong>, Interface3.<strong>class</strong>),
<a name="112" href="#112">112</a>                 Arrays.asList(Class2.<strong>class</strong>, Interface5.<strong>class</strong>, Interface4b.<strong>class</strong>, Interface3.<strong>class</strong>),
<a name="113" href="#113">113</a>                 Arrays.asList(Class2.<strong>class</strong>, Class1.<strong>class</strong>, Interface4a.<strong>class</strong>, Interface3.<strong>class</strong>)) });        
<a name="114" href="#114">114</a>         
<a name="115" href="#115">115</a>         <em class="comment">// interface -> interface chains</em>
<a name="116" href="#116">116</a>         data.add(<strong>new</strong> Object[] { Interface4a.<strong>class</strong>, Cloneable.<strong>class</strong>, <strong>true</strong>, 
<a name="117" href="#117">117</a>                 asSet(Arrays.asList(Interface4a.<strong>class</strong>, Cloneable.<strong>class</strong>)) });        
<a name="118" href="#118">118</a>         data.add(<strong>new</strong> Object[] { Interface5.<strong>class</strong>, Interface1.<strong>class</strong>, <strong>true</strong>, asSet(
<a name="119" href="#119">119</a>                 Arrays.asList(Interface5.<strong>class</strong>, Interface4a.<strong>class</strong>, Interface3.<strong>class</strong>, 
<a name="120" href="#120">120</a>                               Interface2a.<strong>class</strong>, Interface1.<strong>class</strong>),
<a name="121" href="#121">121</a>                 Arrays.asList(Interface5.<strong>class</strong>, Interface4a.<strong>class</strong>, Interface3.<strong>class</strong>, 
<a name="122" href="#122">122</a>                               Interface2b.<strong>class</strong>, Interface1.<strong>class</strong>),                              
<a name="123" href="#123">123</a>                 Arrays.asList(Interface5.<strong>class</strong>, Interface4b.<strong>class</strong>, Interface3.<strong>class</strong>, 
<a name="124" href="#124">124</a>                               Interface2a.<strong>class</strong>, Interface1.<strong>class</strong>),
<a name="125" href="#125">125</a>                 Arrays.asList(Interface5.<strong>class</strong>, Interface4b.<strong>class</strong>, Interface3.<strong>class</strong>, 
<a name="126" href="#126">126</a>                               Interface2b.<strong>class</strong>, Interface1.<strong>class</strong>)) });
<a name="127" href="#127">127</a>         
<a name="128" href="#128">128</a>         <strong>return</strong> data;
<a name="129" href="#129">129</a>     }
<a name="130" href="#130">130</a> 
<a name="131" href="#131">131</a>     <em class="comment">// can't use SetUtils.asSet as that would cause a circular dependency</em>
<a name="132" href="#132">132</a>     <strong>private</strong> <strong>static</strong> &lt;U> Set&lt;U> asSet(U... objects) {
<a name="133" href="#133">133</a>         <strong>return</strong> <strong>new</strong> HashSet&lt;U>(Arrays.asList(objects));
<a name="134" href="#134">134</a>     } 
<a name="135" href="#135">135</a> 
<a name="136" href="#136">136</a>     <em class="comment">// called for each parameter set in the test data</em>
<a name="137" href="#137">137</a>     <strong>public</strong> <a href="../../../../com/qrmedia/commons/lang/ClassUtilsSuperclassChainTest.html">ClassUtilsSuperclassChainTest</a>(Class&lt;?> clazz, Class&lt;?> superclass, <strong>boolean</strong> validArguments,
<a name="138" href="#138">138</a>             Set&lt;List&lt;Class&lt;?>>> expectedSuperclassChains) {
<a name="139" href="#139">139</a>         <strong>this</strong>.clazz = clazz;
<a name="140" href="#140">140</a>         <strong>this</strong>.superclass = superclass;
<a name="141" href="#141">141</a>         <strong>this</strong>.validArguments = validArguments;
<a name="142" href="#142">142</a>         <strong>this</strong>.expectedSuperclassChains = expectedSuperclassChains;
<a name="143" href="#143">143</a>     }
<a name="144" href="#144">144</a>     
<a name="145" href="#145">145</a>     @Test
<a name="146" href="#146">146</a>     <strong>public</strong> <strong>void</strong> getSuperclassChain_invalid() {
<a name="147" href="#147">147</a>         
<a name="148" href="#148">148</a>         <strong>if</strong> (!validArguments) {
<a name="149" href="#149">149</a>             
<a name="150" href="#150">150</a>             <strong>try</strong> {
<a name="151" href="#151">151</a>                 ClassUtils.getSuperclassChain(clazz, superclass);
<a name="152" href="#152">152</a>                 fail();
<a name="153" href="#153">153</a>             } <strong>catch</strong> (IllegalArgumentException exception) {
<a name="154" href="#154">154</a>                 
<a name="155" href="#155">155</a>                 <em class="comment">// expected</em>
<a name="156" href="#156">156</a>             }
<a name="157" href="#157">157</a>             
<a name="158" href="#158">158</a>         }
<a name="159" href="#159">159</a>         
<a name="160" href="#160">160</a>     }   
<a name="161" href="#161">161</a>     
<a name="162" href="#162">162</a>     @Test
<a name="163" href="#163">163</a>     <strong>public</strong> <strong>void</strong> getSuperclassChains_invalid() {
<a name="164" href="#164">164</a>         
<a name="165" href="#165">165</a>         <strong>if</strong> (!validArguments) {
<a name="166" href="#166">166</a>             
<a name="167" href="#167">167</a>             <strong>try</strong> {
<a name="168" href="#168">168</a>                 ClassUtils.getSuperclassChains(clazz, superclass);
<a name="169" href="#169">169</a>                 fail();
<a name="170" href="#170">170</a>             } <strong>catch</strong> (IllegalArgumentException exception) {
<a name="171" href="#171">171</a>                 
<a name="172" href="#172">172</a>                 <em class="comment">// expected</em>
<a name="173" href="#173">173</a>             }
<a name="174" href="#174">174</a>             
<a name="175" href="#175">175</a>         }
<a name="176" href="#176">176</a>         
<a name="177" href="#177">177</a>     }   
<a name="178" href="#178">178</a>     
<a name="179" href="#179">179</a>     @Test
<a name="180" href="#180">180</a>     <strong>public</strong> <strong>void</strong> getSuperclassChain() {
<a name="181" href="#181">181</a>         
<a name="182" href="#182">182</a>         <strong>if</strong> (validArguments) {
<a name="183" href="#183">183</a>             List&lt;Class&lt;?>> superclassChain = ClassUtils.getSuperclassChain(clazz, superclass);
<a name="184" href="#184">184</a>             
<a name="185" href="#185">185</a>             <em class="comment">// the expected result is null if there is no chain between the arguments</em>
<a name="186" href="#186">186</a>             <strong>if</strong> (expectedSuperclassChains.isEmpty()) {
<a name="187" href="#187">187</a>                 assertNull(superclassChain);
<a name="188" href="#188">188</a>             } <strong>else</strong> {
<a name="189" href="#189">189</a>                 assertTrue(expectedSuperclassChains.contains(superclassChain));
<a name="190" href="#190">190</a>             }
<a name="191" href="#191">191</a>             
<a name="192" href="#192">192</a>         }
<a name="193" href="#193">193</a>         
<a name="194" href="#194">194</a>     }    
<a name="195" href="#195">195</a>     
<a name="196" href="#196">196</a>     @Test
<a name="197" href="#197">197</a>     <strong>public</strong> <strong>void</strong> getSuperclassChains() {
<a name="198" href="#198">198</a>         
<a name="199" href="#199">199</a>         <strong>if</strong> (validArguments) {
<a name="200" href="#200">200</a>             assertEquals(expectedSuperclassChains, ClassUtils.getSuperclassChains(clazz, superclass));
<a name="201" href="#201">201</a>         }
<a name="202" href="#202">202</a>         
<a name="203" href="#203">203</a>     }
<a name="204" href="#204">204</a>     
<a name="205" href="#205">205</a> }
</pre>
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